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When is .then(success, fail) considered an antipattern for promises?
...ake an async call that does one of a few things: 1) returns successfully (2xx statuscode), 2) returns unsuccessfully (4xx or 5xx code) but not rejected per se, 3) or doesn't return at all (internet connection is down). For case #1, the success callback in the .then is hit. For case #2, the error ca...
Command-line Tool to find Java Heap Size and Memory Used (Linux)?
...
This command shows the configured heap sizes in bytes.
java -XX:+PrintFlagsFinal -version | grep HeapSize
It works on Amazon AMI on EC2 as well.
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Are there console commands to look at whats in the queue and to clear the queue in Sidekiq?
...nd them
redis 127.0.0.1:6379> keys *
1) "sidekiq_staging:worker:ip-xxx-xxx-xxx-xxx:7635c39a29d7b255b564970bea51c026-69853672483440:default"
2) "sidekiq_staging:worker:ip-xxx-xxx-xxx-xxx:0cf585f5e93e1850eee1ae4613a08e45-70328697677500:default:started"
3) "sidekiq_staging:worker:ip-xxx...
Deny all, allow only one IP through htaccess
...o, a more future-proof answer would be:
<RequireAll>
Require ip xx.xx.xx.xx yy.yy.yy.yy
</RequireAll>
Hopefully, I've helped prevent this page from becoming one of those "outdated tutorials". :)
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How can I ssh directly to a particular directory?
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You can do the following:
ssh -t xxx.xxx.xxx.xxx "cd /directory_wanted ; bash"
This way, you will get a shell right on the directory_wanted.
Explanation
-t Force pseudo-terminal allocation. This can be used to execute arbitrary screen-based program...
Switch statement for string matching in JavaScript
...eed a substring match, and could do:
switch (base_url_string) {
case "xxx.local":
// Blah
break;
case "xxx.dev.yyy.com":
// Blah
break;
}
...but again, that only works if that's the complete string you're matching. It would fail if base_url_string were, say...
Unable to execute dex: GC overhead limit exceeded in Eclipse
...clipse.ini. Set the values to 512 and 1024 as below:
openFile
--launcher.XXMaxPermSize
512M
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms512m
-Xmx1024m
The changed area in image
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hidden symbol ... is referenced by DSO 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...码即可兼容Win/Linux平台的函数导出：
#ifdef WIN32
#ifdef XXX_EXPORTS
#define XXX_API __declspace(dllexport)
#else
#define XXX_API __declspace(dllimport)
#endif
#define XXX_LOCAL
#else
#ifdef XXX_EXPORTS
#define XXX_API __attribute__ ((visibility("default")))
#els...
Linux常用命令(持续更新...) - 脚本技术 - 清泛IT论坛，有思想、有深度
...:38 编辑
Linux服务相关命令：
chkconfig --list
chkconfig --add xxx
chkconfig xxx on/off
chkconfig --del xxx
磁盘空间不足，查看各目录占用情况：
cd xxx
du -h --max-depth=1
查找文件（例如/usr目录下查找包含'apache'的目录和文件）：
find /u...
Remote Connections Mysql Ubuntu
...d.cnf and assigned to your computers IP address and not loopback
#Replace xxx with your IP Address
bind-address = xxx.xxx.xxx.xxx
Or add a
bind-address = 0.0.0.0 if you don't want to specify the IP
Then stop and restart MySQL with the new my.cnf entry. Once running go to the termi...